How do i solve an equation using elimination

y=-3x+6

y=x^2-4

Adrian ordered a blue-denim jacket for $69.75 and 2 sweaters for $55 each. With 7% sales tax and shipping below, how much was his total order?

together, miguel and rico collected 175 books. they delivered 1/5 of the books to a preschool and 2/5 of the books to a camp. the rest were divided equally between 2 libraries. how many books did each library get?

A hotel charges $20 for the use of its dining room and $2.50 a plate for each dinner. an association gives a dinner and charges $3 a plate but invites for non paying guests.

A bicycle has a listed price of $867.95 before tax. If the sales tax rate is 6.75%, find the total cost of the bicycle with sales tax included.

Form a polynomial whose zeros and degree are given zeros: 8 multiplicity 1; 3, multiplicity 2; degree 3

Which is the better buy 18 cans of cat food for $15 or 12 cans for $9

A certain spinner has equally sized slices. The probability of landing on a yellow slice is 1/5. What are the odds in favor of landing on a yellow slice?

Each table has 4 legs how many legs do 4 tables have

You can buy 2 DVDs for the same price you would pay for 3 CDs selling for $13.20 a piece. Explain how you could find the price of 1 DVD.

The blue line arrives every 10 minutes the red line arrives every 8 minutes and the yellow line arrives every 12 minutes, how long until they arrive at the station at the same time